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Finding the Fourth Proportional to 2,080.80, 2,871.54 and 1,241.55

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Solution

The fourth proportional to 2,080.80, 2,871.54 and 1,241.55 is: 1,713.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.80 : 2,871.54 = 1,241.55 : x
  2. Step 2: Convert to fraction form
    2,080.80/2,871.54 = 1,241.55/x
  3. Step 3: Cross multiply
    2,080.80x = 2,871.54 × 1,241.55
  4. Step 4: Simplify right side
    2,080.80x = 3,565,160.49
  5. Step 5: Solve for x
    x = 3,565,160.49/2,080.80
  6. Step 6: Final answer
    x = 1,713.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.